<html>
<head>
    <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
<script type="text/javascript">
function disp_prompt()
  {
  var name=prompt("请问：您关注何卜强的博客了吗？","关注了")
  if (name!=null && name!="")
    {
    document.write("感谢老铁支持！")
    }
  }
</script>
</head>
<body>

<input type="button" onclick="disp_prompt()" value="点我，点我有惊喜" />

</body>
</html>
